In 1999, Bombardier introduced a new type, the Challenger 300, as part of the growing "super-midsize" private jet class. The Challenger 300 – and later Challenger 350, introduced in 2013 – competes with aircraft including the Cessna Citation X and Gulfstream G280. The Challenger 350 carries passengers 3,200 nautical miles non-stop at a cruise speed of Mach 0.80, and features the widest, purpose-built super midsize aircraft cabin with both a flat floor, and in-flight baggage access.
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.